Can Adults Get a Different Kind of ADHD?

The Wall Street Journal (5/23, Reddy, Subscription Publication) reports that two studies published in JAMA Psychiatry suggest that people who are diagnosed with AD/HD as adults may have a condition that is different than the AD/HD diagnosed in kids.

Reuters (5/23, Rapaport) says that one study included approximately 5,200 people, while the other study looked at more than 2,000 twins.